then they do a washington trip where they tour the fbi, the capital, the supreme court. they go to the pentagon, get a series of briefings about how security works in a democracy. and on october 26th, which was friday, as we were watching a gathering storm, they were gathering to get on planes to go home and these two didn't show up. >> is there a concern on the part of national security officials in the government? >> there is. fbi has issued a be on the lookout alert that's gone to police agencies, intelligence fusion centers. so the dark scenario is that these are two significant intelligence officials from afghanistan with the issues of green on green attacks, what are they up to? why did they run away? is this part of a plot? if we were watching homeland, that would be the scenario. >> but we're not. it's real. >> people working the case are more of the mind that -- and this has happened before. that they may be moving toward canada to try to seek asylum because it's easier to get there or maybe just wanted to spend a little more time in these great united states. >